例句與造句

1. Uniaxial motion , fixed - axis rotation ; first and second order systems ; natural and forced response ; transfer functions , zeroes , poles ; elementary control : open - loop , closed - loop ; closing the loop alters the natural and forced response characteristics ; stability and instability
   003單軸運動，固定軸的轉動，一階與二階系統，自然與強迫響應；轉移函數，零點，極點；基本控制：開回路，閉回路；回授對自然與強迫響應特性之改變；穩定與不穩定。
2. It's difficult to find fixed-axis rotation in a sentence. 用fixed-axis rotation造句挺難的